O Ring Specification Chart

An o ring seal is used to prevent the loss of a fl uid or gas.

O ring specification chart. Metric sizes standard metric sizes for o rings are defined by international standard iso 3601 1 2002. This o ring size chart provides a list of standard as568 o ring sizes. In de signing this new group of o rings we left spacing in the part numbers to allow us to add additional sizes should they be required. O ring tolerances vary by use please refer to our o ring.

The standard sizes are also used for most military specifications. Find as568 o ring standard sizes by cross section inside diameter and outside diameter in our o ring size chart and separate o ring tolerance chart. Custom and non standard o ring sizes available with no tooling or setup fees. Inside diameters range from 0 029 to 25 940 inches.

O ring groove design guides offer default dimensional guidance on the most basic o ring groove design applications. An o ring is a circular cross section ring molded from rubber figure 1 1. 1 2 what is an o ring seal. Select a size to buy standard and custom o rings from the world s largest inventory network or custom orders can be made within a few weeks typically without tooling fees.

Various nations and organizations have developed o ring sizing standards that are now used worldwide. Popular o ring size standards include usa s as568 o ring size chart the uk s bs 1806 o ring sizing chart and japan s jis b 2401 o ring size list. Refer to our standard o ring size chart to find usa as568 o ring dimensions. Nominal cross section o rings.

On o ring drive belts and their application will be found in o ring applications section iii. And metric o ring sizes. Order o rings online from the world s largest inventory network including custom o rings typically without tooling fees. O ring size charts for u s.

The best o rings are useless without the right groove design which becomes increasingly important the more demanding the application environment. Please contact us if you are looking for a size not shown in the 5 32 group. Find the right size o rings quad rings x rings and square rings for your application. Until now o ring standards have left a gap between the 1 8 and 3 16 nominal cross sections.

If you need to know how to size an o ring consider starting with these as568 o ring sizes so you will not have to. O ring kits the handy carrying case with o rings is ideally suited. Usa as568 o ring standard sizes are the most commonly used o ring sizes in the world. Each as568 dash number is a unique number that denotes specific o ring dimensions.

Review the general o ring groove design considerations before moving onto the. The seal assembly consists of an elastomer o ring and a gland. O rings o rings are manufactured according to metric and im perial international standards such as as 568b din iso 3601 and jis. Most industries consider as568 specifications standard o ring sizes.

Cross sectional diameters range from 0 040 to 0 275 inch.